CVE-2026-112020
LodePNG through 20261006 Heap Out-of-Bounds Read via getFilterTypesInterlaced()
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 18, 2026
- Updated
- Oct 22, 2026
- Reserved
- Oct 18, 2026
Description
LodePNG through 20261006 contains a heap out-of-bounds read vulnerability in lodepng::getFilterTypesInterlaced() in lodepng_util.cpp that lacks bounds checks on decompressed IDAT data. Attackers can supply a crafted interlaced PNG declaring a raster larger than its IDAT stream to disclose adjacent heap memory or crash applications.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
lodepnglvandeve |
|
References
- https://hackmd.io/@haindpwn/lodepng-getfiltertypesinterlaced-short-idat-oob-readtechnical-description
- https://github.com/lvandeve/lodepng/blob/e584a8490db1b76b81bf298c11c09d3b55d9c270/lodepng_util.cpp#L185-L203technical-description
- https://github.com/lvandeve/lodepngproduct
- VulnCheck Advisory: LodePNG through 20261006 Heap Out-of-Bounds Read via getFilterTypesInterlaced()third-party-advisory
- https://hackmd.io/@haindpwn/cve-2026-112020-lodepng-getfiltertypesinterlaced-short-idat-oob-readexploit
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